Христина

Khrystyna Derenivska
Front-End Developer (React / Next.js / TypeScript)

Overview
Front-End Developer with 5+ years of commercial experience (React, Next.js,
strict TypeScript), focused on front-end architecture and B2B SaaS products.
Built a production platform front end from scratch, from stack selection and
architecture to release. Experienced in setting development standards,
building reusable component libraries from Figma, and delivering features to
production autonomously. Uses AI-assisted development (Claude Code) as
part of the daily workflow.

Education
Chernivtsi National University, 2014 - 2018
Faculty of Economics, BA in Marketing
Contact information Additional courses:
Phone: [відкрити контакти](див. вище в блоці «контактна інформація»)
● Introduction to Web Development by Coursera
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
● UX Design basic, Flying Cakes(Lviv)
Linkedin: khrystyna-derenivska
● Front-end Lab, EPAM
Github: kblueberry
● JSP Angular Bootcamp, JetSoftPro
Location: Lviv
Work experience
Languages Front end developer at Covent IT August, 2025 - present
English (Upper intermediate)
Project: educational platform
● Built the teacher content management module end to end, from
Skills technical planning to production with type-safe forms built on
JavaScript react-hook-form + zod and strict TypeScript
TypeScript ● Led the front-end architecture migration to Feature-Sliced Design: set
React.js module boundaries, coding conventions, and code review standards
Next.js, Vite for the team, delivering a phased plan with scope, timelines, and
AI coding assistants (Claude Code) estimates that was executed without blocking feature delivery
react-hook-form + Zod, ● Used Claude Code to analyze the legacy codebase and support the
Zustand, refactoring plan, mapping dependencies and identifying areas for
React Query, React router improvement
HTML Technologies: React.js, Next.js, TypeScript, HTML, Tailwind CSS, Radix UI,
CSS (SASS, styled-components, styled-components, Zustand, Claude Code, react-hook-form+Zod, i18n, Vite
Material UI)
Figma Front end developer at High code space December, 2024 - September, 2025
RxJs Project: cruise booking platform
Unit testing (Jasmine/Karma) ● Built a reusable component library from Figma designs (filters, date
Node.js pickers, cabin selector, multi-step forms) used across 10+ pages of the
Nest.js booking platform, ensuring consistent UX on mobile, tablet, and
MongoDB desktop
GraphQL ● Developed and shipped 5 new features, including advanced cruise
Git filtering, cabin selection, and the multi-step booking flow
● Integrated REST API and payment providers for real-time availability,
pricing, and reservations, adding caching and error handling
Technologies: React.js, Next.js, TypeScript, HTML, SASS, Material

Front end developer at Bitconvex April, 2024 - May, 2024
Project: freelance project, website for cryptotrading
● Built responsive UI for trading dashboard, wallet, and account pages
with React, TypeScript, and Mantine
● Fixed 15+ UI and data-sync bugs, improving stability of the trading
flow / existing pages
Technologies: React.js, Redux, TypeScript, HTML, Bootstrap, Mantine

Front end developer at TLV Generator September, 2023 - February, 2024
Project: Educational platform (freelance). Built the client side from scratch.
● Built the client side of the educational platform from scratch as the
sole front-end developer
● Designed and delivered the admin panel from first commit to
production: content management, user management, analytics, etc.,
integrating with the backend API through a typed data-fetching layer
● Planned and estimated front-end work independently, coordinating
directly with the backend developer and product owner to ship 1
release in 5 months
Technologies: React.js, Zustand, Next.js, Vite, SASS, TypeScript, Fetch API

Front end developer at Plane April, 2023 - October, 2023
Project: open-source project, a task management platform similar to Jira
● Identified , reproduced , and resolved UI and component logic bugs
● Collaborate with team members to deliver solutions and explore
potential platform enhancements
Technologies: HTML/CSS, SASS, JavaScript/TypeScript, React/Redux, React
Hooks

Front end developer at Inventify November, 2020 - June, 2023
Project: a no-code web platform for companies resources management
● Developed core modules of a no-code B2B platform for company
resource management over 2.5 years, taking features from UX
discussions to production via CI/CD (GoCD, Jenkins), including data
tables, analytics dashboards with Chart.js, Excel import/export
● Wrote unit tests for components and services with Jasmine/Karma,
keeping critical modules covered before deploying to staging and
production
Technologies: HTML/CSS (SCSS), JavaScript/TypeScript, Angular 9+, Angular
Material, ngx-datatables, RxJs, Moment.js, Chart.js, Sheet.js, Jasmine/Karma,
Figma, Git, CI/CD (GoCD, Jenkins)

Front end developer at Govitall July, 2020 - November, 2020
Project: a web platform for education for college students
● Built 5+ responsive, semantic pages and templates for a
WordPress-based education platform, ensuring consistent display
across devices and browsers
● Shipped fixes and releases to staging and production, working with QA
to resolve 20+ layout and functionality bugs before launch
Technologies: HTML/CSS (SCSS), JavaScript, Wordpress, Git

Trainee Front-End Developer at JetSoftPro March, 2020 - June, 2020
Project: a web platform for HR managers
● Developed UI modules for an HR management platform with Angular,
TypeScript, and RxJS, including candidate lists, forms, and Chart.js
analytics dashboards]

Technologies: HTML/CSS (SCSS), JavaScript/TypeScript, Angular 9+, Angular
Material, RxJs, Chart.js, Git